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參數(shù)資料
| 型號(hào)： | CLC427 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual Voltage Feedback Amplifier for Single Supply Operation |
| 中文描述： | 雙電壓反饋放大器的單電源供電 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 130K |
| 代理商： | CLC427 |
http://www.national.com
4
CLC427 OPERATIONS
Description
The CLC427 contains two single supply voltage-feed-
back amplifiers. The CLC427 is a dual version of the
CLC423 with the following features:
Operates from a single +5V supply
Maintains near rail-to-rail performance
Includes the negative rail (0V) in the Common
Mode Input Range (CMIR)
Offers low -74/-94dBc 2nd and 3rd harmonic
distortion
Provides BW > 20MHz and 1MHz distortion
< -50dBc at V
o
= 4V
pp
Single Supply Operation (V
CC
= +5V, V
EE
= GND)
The CLC427 is designed to operate from 0 and 5V
supplies. The specifications given in the
Electrical
Characteristics
table are measured with a common
mode voltage (V
cm
) of 2.5V. V
cm
is the voltage around
which the inputs are applied and the output voltages are
specified.
Operating from a single +5V supply, the CMIR of the
CLC427 is typically 0V to +3.7V. The typical output range
with R
L
= 150
is +0.35V to +4.5V.
For simple single supply operation, it is recommended
that input signal levels remain above ground. For input
signals that drop below ground, AC coupling and level
shifting the signal are possible remedies. For input
signals that remain above ground, no adjustments need
to be made. The non-inverting and inverting
configurations for both input conditions are illustrated in
the following 2 sections.
Standard Single Supply Operation
Figures 1 and 2 show the recommended non-inverting
and inverting configurations for purely positive input
signals.
Figure 1: Non-inverting Configuration
Figure 2: Inverting Configuration
Single Supply Operation for Inputs that go below 0V
Figures 3 and 4 show possible non-inverting and invert-
ing configurations for input signals that go below ground.
The input is AC coupled to prevent the need for level
shifting the input signal at the source. The resistive volt-
age divider biases the non-inverting input to V
CC
÷ 2 =
2.5V.
Figure 3: AC Coupled Non-inverting Configuration
Figure 4: AC Coupled Inverting Configuration
+
-
1/2
CLC427
R
f
0.1
μ
F
6.8
μ
F
+
V
o
V
in
+5V
R
g
R
t
3(5)
2(6)
4
8
1(7)
V
V
1
R
R
o
in
f
g
= +
+
-
1/2
CLC427
R
f
0.1
μ
F
6.8
μ
F
+
V
o
V
in
+5V
R
b
3(5)
2(6)
4
8
1(7)
R
g
R
t
V
V
R
R
o
in
f
g
=
Select R to yield
desired R
R ||R
in
g
=
+
-
C1/2
R
f
0.1
μ
F
6.8
μ
F
+
V
o
V
in
+5V
R
g
C
R
3(5)
2(6)
4
8
1(7)
C
c
R
V
V
1
R
R
2.5
o
in
f
g
=
+
+
low frequency cutoff
1
2 R C
, where: R
R
2
c
in
=
=
2.5V
R C
RC
c
>>
+
-
1/2
CLC427
R
f
0.1
μ
F
6.8
μ
F
+
V
o
V
in
+5V
R
3(5)
2(6)
4
8
1(7)
C
c
R
V
V
R
R
2.5
o
in
f
g
=
+
low frequency cutoff
1
2 R C
c
=
2.5V
R
g
R >> R
source
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CLC427AJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Voltage Feedback Amplifier for Single Supply Operation |
| CLC427AJE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-HIGH SPEED OP AMP |
| CLC427AJP | 制造商:Texas Instruments 功能描述: |
| CLC428 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Wideband, Low-Noise, Voltage Feedback Op Amp |
| CLC428 DIE | 制造商:Texas Instruments 功能描述: |
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